题目内容

The project ______ last month but unfortunately it had to be prolonged because of the financial problem.
A．needn’t have been finishedB．shouldn’t have finished
C．could have been finished D．must have finished
C

试题分析：句意：这个项目本来是可以在上个月完成，但是不幸的是，因为财政问题，它不得不被延期。从but unfortunately it had to be prolonged because of the financial problem.可知这是对过去的虚拟，用could have done表示“本可以做却没有做”，所以选C.
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